Anton Sherwood <bro### [at] poboxcom> wrote:
> I know someone wrote an extension to allow a plane to transfer rays to
> another plane, so that you can make (for example) two windows side by
> side that overlook different places.  I think it was called "portal
> pigment" but I find no mention of it more recent than 2001.  Help?
>

Hi,

I confess to never having heard of something called "portal pigment", and
I'm too lazy to search for it right now ...
..... however, your example of windows showing different places could be made
using MegaPOVs "camera_view" pigment. Essentially you define a camera
looking somewhere into your scene and get a pigment that looks as if you
had rendered that view into an image earlier. As an example they remake the
"desk with a picture on it showing exactly that desk with ..."-scene with
only one render. In that example, all "cameras" are equal, but you could
choose differently, of course.

> I need it to complete a series for
> http://en.wikipedia.org/wiki/Andreini_tessellation -- I made most of the
> images there, with mirrors, and that's not possible for some of the
> lattices on the list.
>

Nice images ! I just love everything that has even remotely to do with
polyhedra ... though I fail to see why you would need mirrors or
"camera_view" for those.

Greetings

Karl

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